<template>
  <div>
    <h1>{{title}}--count:{{count}}</h1>
    <button @click="changeCount">改变值</button>
  </div>
</template>

<script>
export default {
    name:"One",
    data(){
        return{
            title:"One",
            count:0
        }
    },
    methods:{
      changeCount(){
        this.count++
      }
    },
   mounted(){
    console.log("One");
   }
}
</script>

<style>

</style>